nodejs loads http request module

Node.js is a server-side platform written on JavaScript. Its powerful ecosystem of tools is built on the npm package manager. This makes it easy to implement various functions with Node.js. In such an environment, Node.js loading HTTP request module is one of the common use cases.

Node.js has a built-in HTTP module, which can easily implement HTTP requests. In addition, Node.js also provides some third-party HTTP request modules, such as request and axios, which provide developers with greater control and flexibility.

This article will show you how to load and use Node.js’ built-in HTTP module and request module.

Load Node.js built-in HTTP module

In order to use Node.js built-in HTTP module, you need to use the require() method to load it into your code. Here is a code snippet that will show you how to load and use it:

const http = require('http');

http.createServer((req, res) => {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end('Hello World!');
}).listen(8080);

In the above example code, we loaded the Node.js built-in HTTP module and used it to create a simple HTTP server. In this sample code, we create an HTTP server using the http.createServer() method and set up request and response handlers for the server. In this case, our response handler returns a simple "Hello World!" message.

Load third-party HTTP request module

Compared with using the built-in HTTP module of Node.js, using a third-party HTTP request module may be more convenient and flexible. In this chapter, we will show you how to use the request module to make HTTP requests.

To use the request module, you need to install it first. You can install it using the npm package manager. Use the following command to complete the installation:

npm install request

After the installation is complete, you can use the following code snippet to initiate an HTTP GET request:

const request = require('request');

request('http://www.baidu.com', function (error, response, body) {
  console.error('error:', error); // Print the error if one occurred
  console.log('statusCode:', response && response.statusCode); // Print the response status code if a response was received
  console.log('body:', body); // Print the HTML for the Google homepage.
});

In the above sample code, we loaded the request module , and use it to initiate an HTTP GET request. In this sample code, we initiate a GET request to Baidu and use a callback function to handle the response. In this case, our response handler prints the HTTP response code and the response body (response content).

In addition to supporting HTTP GET requests, the request module also supports other types of HTTP request adapters, including POST, PUT, DELETE, etc. To make these types of requests, see the documentation for the request module.

Summary

Node.js is a popular server-side platform that can be used with various HTTP request modules. In this article, we showed you how to load and use Node.js’ built-in HTTP module and the third-party HTTP request module request. I hope this article helps you master the HTTP request capabilities of Node.js as quickly as possible.

The above is the detailed content of nodejs loads http request module. For more information, please follow other related articles on the PHP Chinese website!